Disk or colter sharpener.



PATENTED JULY 26, 1904.

G. D. DENIO.

DISK OR COLTER SHARPENER.

APPLICATION FILED SEPT. 14, 1903.

NO MODEL.

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NITED STATES Patented July 26, 1904.

GEORGE D. DENIO, OF NILES, KANSAS.

DISK OR COLTER SHARPENER.

SPECIFICATION forming part of Letters Patent No. 766,103, dated July 26,1904,

Application filed September 14, 1903. Serial No. 173,204. (No model.)

To all whom it nmconcern:

Be it known that I, GEORGE D. DENIO, a citizen of the United States.residing at Niles, in the county of Ottawa and State of Kansas, haveinvented certain new and, useful 1mprovements in Disk or ColterSharpeners, of which the following is a specification.

My invention relates to disk or colter sharpeners; and my object is toproduce a machine of this character by which disks or colters of anyordinary size can be quickly, easily, and conveniently sharpened.

A further object is to produce a machine of this character of simple,strong, durable, and cheap construction.

To these ends, the invention consistsincertain novel and peculiarfeatures of construction and combination of parts, as hereinafterdescribed and claimed, and in order that it may be fully understoodreference is to be had to the accompanyingdrawings, in which Figure 1 isa top plan view of a disk or colter sharpening machine embodying myinvention. Fig. 2 is a vertical section on the line 11 11 of Fig. 1.Fig. 3 is an enlarged section on the line III 111 of Fig. 1. Fig. 1 is afull-size section taken on the line IV IV of Fig. 1.

Referring to the drawings in detail, the table comprises the metallictop 1, the legs 2, and braces 3 between the legs and the top, it beingunderstood, of course, that the legs may be braced in any other suitablemanner, if desired, so that the table structure shall be strong andrigid. Near and parallel with its front margin, the table is providedwith a longitudinal slot 1, and its rear margin is re- 1 cessed ordished, as shown at 5, the left-hand end of the table also by preferencebeing i knife being held reliably in the slot by means narrower than theopposite end, as shown clearly in Fig. 1. Near the right-handend andapproximately parallel concentric with the dished edge the table-top isprovided with a set of segmental slots 6 and a set of segmental slots 7,and the top is strenghtened and rendered more rigid by a depending rib8, a portion of which extends between said slots, as shown most clearlyby dotted lines, Fig. 1.

9 designates bearings bolted rigidly upon the top at opposite sides ofslot #1, and 10 is a shaft journaled in said bearings and having itsrear end projecting beyond the dished edge of the top, which rear end isthreaded, as at 11.

12 designates a boxing, keyed or otherwise rigidly secured on the shaft10 and having its front face hollowed out to fit snugly against the backof the disk '13 to be sharpened, the shaft extending loosely through thehole or opening in the center of the disk.

1 1 designates a washer fitting loosely on the shaft and having its rearface convex to fit snugly against the hollow or front side of the disk,a clamping-nut 15 being screwed upon the threaded portion of the shaftto clamp the disk rigidly between the hollow boxing and the washer, asshown most clearly in Fig. 2.

To rotate the disk, a large cog-wheel 16 is secured rigidly on shaft 10and is disposed within slot 4. Meshing with this cogwheel is acog-pinion 17, secured rigidly on a shaft 18, journaled in bearing-boxes19, depending from the table-top, and said shaft may be operated bymeans of a rigid crankhandle 20. mounted thereon, or by the beltwheel21, the latter being preferably about the same diameter as the cog-wheel16, though of course I do not restrict myself to a beltwheel of thisparticular size.

22 designates a knife-holder resting upon the table-top and providedwith an inclined longitudinal groove 23 to receive the knife 2a, and atthe inner end the knife-holder is provided with an upwardly-projectinglug 25, carrying a set-screw 26, adapted to bear against the rear end ofthe knife and force the sharp end of the knife against the periphery ofthe disk, as shown in Fig. 1, the

of the clamping-bolt 27, extending through lug 28 of the holder, formedlaterally of the inclined groove and bearing upon the knife, as shownmost clearly in Figs. 1 and #1,

the clamping-bolt preventing upward move- 9 ment of the knife. To securethe holder at the proper point on the table and at the proper angle forthe efficient operation of the knife on the disk, screw-bolts 29 extenddown through slots 6 or 7, accordingly as a small or large disk is beingsharpened, and are engaged by clamping-nuts 30, which with a slightbackward turn can be loosened sulficiently to permit the knife-holder tobe adjusted longitudinally of said slots to accommodate a disk .orcolter of different size, as will be readily understood. The bolts 29 29are received in apertures formed through the bottom of the knife-holder,which apertures are normally concealed by the knife.

For the purpose of eliminating any possibility of vibratory movement ofthe disk or colter While being sharpened the holder may be provided withan extension-arm 31, equipped with a bolt 32, carrying loosely a roller33 to bear against the concave side of the periphery of the disk, asshown clearly in Fig. 1.

In practice after the disk is quickly and easily secured upon the shaftin the manner explained and the knife-holder has been adjusted until theknife engages the disk at the proper point and has been reliably securedin said position by clamping-nuts 30 the sharpening operation can bevery quickly performed by either grasping the crank-handle and revolvingthe same at a suitable speed or by driving shaft 18, through the mediumof a belt (not shown) engaged with belt-wheel 21.

WVhen the disk or colter is sharpened sufiiciently, it can be easily andquickly removed in an obvious manner.

From the above description it will be apparent that I have produced adisk or colter sharpening machine which embodies the features ofadvantage enumerated as desirable in the statement of invention, andwhile I have illustrated and described the preferred embodiment of thesame it is to be understood that I reserve the right to make suchchanges in the form, proportion, detail construction, and arrangement ofthe parts as properly fall within its spirit and scope.

Having thus described the invention, what I claim as new, and desire tosecure by Letters Patent, is

l. A disk or colter sharpening machine comprising a suitable support, arotatable shaft mounted thereon and adapted to receive the article to besharpened, the support having a plurality of series of slots formedtherein concentric with the surface of the article and so located withreference to the shaft as to accommodate different sizes of articles tobe sharpened, a sharpening member and means passing through one of theseries of slots and engaging the sharpening member to retain itimmovably in position.

2. In a machine of the character described, the combination with asuitable support provided with a shaft for retaining the article to besharpened, of a sharpening member, the support provided with a series ofslots, means passing through the slots and engaging the sharpeningmember and a strengthening-rib tuclinally and removable means carried bythe holder and engaging the knife to retain it against upward movement.

4:. The combination with a support, a shaft carried thereby and meansfor operating the shaft, of a grooved holder adjustably secured to thesupport, a knife received in the holder, means carried by the holder foradjusting the knife longitudinally therein, a lugcarried by the holderand means held by the lug and engaging the knife to prevent sidewisemovement thereof.

5. The combination with a slotted support, a shaft mounted thereon andmeans for rotating the shaft, of a knife-holder provided with awedge-shaped laterally-inclined groove extending longitudinally thereof,and provided with apertures passing through the bottom of the holder,means received in the apertures and projecting therethrough and throughthe slots in the support for securing the holder to the support, a knifereceived in the groove, means for adjusting the knife longitudinally, aing located laterally of the groove and means removably received in thelug, one end of the last-named means engaging the knife to preventsidewise movement thereof.

6. The combination with a slotted table, a rotary shaft mounted thereonand means for rotating the shaft, of a knife-holder adjustably securedon the table, the holder provided with a laterally-inclined groove, aknife received in the groove, a lug located beside the groove and a boltpassing through the lug and engaging the knife to retain it in position.

7. The combination with a suitable support, of a sharpening membermounted thereon, a shaft, means for actuating the shaft, a boxing keyedto the shaft and provided with a concave face, the shaft adapted tosupport the article to be sharpened which fits in the concave face ofthe boxing, a washer provided with a convex face which fits into thearticle being sharpened and means received on the shaft and engaging thewasher to retain the article in close frictional contact with andbetween the convex and concave faces of the washer and boxing,respectively.

In testimony whereof I afiix my signature in the presence of twowitnesses.

I GEORGE D. DENIO.

Witnesses:

G. W. CARBAUGH, WVM. LITTLE.

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